Which U.S. stock-market crash followed the 1929 peak reached on September 3?

The U.S. stock-market crash that followed the peak reached on September 3, 1929, was the Wall Street Crash of 1929.

The Dow Jones Industrial Average reached a record closing level on September 3, 1929, after years of rising share prices and widespread speculation. The market then weakened during September and October before the dramatic trading days commonly associated with the crash. Heavy selling occurred on October 24, October 28, and October 29.

The crash destroyed enormous amounts of paper wealth and damaged confidence, but it was not by itself the sole cause of the Great Depression. Bank failures, falling demand, debt problems, declining investment, and policy decisions deepened the economic contraction that followed.

The 1929 crash is sometimes treated as one single day, but it unfolded across several weeks. “Black Tuesday” refers specifically to October 29, while October 24 is widely known as “Black Thursday.” The market’s later decline continued well into the early 1930s.